<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <title>优惠券管理后台</title>
  <style type="text/css">
  	body,p,h1,h2,h3,h4,h5{
		margin: 0;
		padding: 0;
	}
  </style>
</head>

<body>
  <div id="app"></div>
</body>

</html>